}
    }

    protected void container(C context) throws Exception {
        if (context.lookup == null) {
            context.containerCapsule = createContainerCapsuleFactory()
                    .createContainerCapsule(this, context, createCoreExtensionSelector());
            context.closeables.add(context::closeContainer);
            context.lookup = context.containerCapsule.getLookup();
        } else {